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In frequency domain analysis, HF refects the tension variation of vagus; LF reflects the tension variation of sympathetic nerve.

频阈分析是近年来受到重视的分析方法之一，即对心率变异的速度和幅度进行心率功率谱的分析，亦称心率能谱分析。

This paper reports the varied flowers in syconia of Ficus awkeotsang Makino. We used anatomic observation and statistical analysis to analyze the variation in female and male flowers, mutation rate of different strains and number of varied flowers per syconia in syconia from 24 female and 16 male strains. We also discuss the relation between flower variation and pollinating wasp activity or yield of F. awkeotsang by observing flower development. The results revealed 2 types of flowers in morphology: an umbrella inflorescence shape and solitary.

该文报道了爱玉子花序中存在变异花的现象，并通过花序解剖观测及数据统计分析方法，研究比较雌、雄花序中变异花的类型、不同品系的花序变异率以及单花序中变异花的数量，了解变异花发育过程、变异花与传粉小蜂之间的相互关系，以及变异花对爱玉子产量造成的影响。

Most strong earthquakes occurred on the large areomagnetic variation belts. The lateral heterogeneity of basement, which inferred by large areomagnetic variation, vailed stress concentration, earthquakes preparation and occurrence. We also get distribution of crustal thickness and continental deformation features in SYR from gravity data.

康定—绵阳一带刚性基底的阻挡造成了青藏高原下地壳物质向东的塑性流动被迫转向南东—南南东方向，进而造成了川滇菱形块体内广泛的地壳增厚，布格重力异常等值线呈向南东伸出的舌状是其地壳增厚作用的直观反映。

Rice is the main crop in the Tao-Cheng-Hsi basin. The vegetated area is large, and so the variation of land use can be obtained from the variation of vegetated area.

因为流域内植生面积广大，要了解该区的土地利用变化情形，可以透过植生的侦测，进而得到植生覆盖之变迁资讯。

Variation in soil drainage class and varying amounts of topsoil displaced into windrows were both factors influencing site quality variation of a third soil type.

土壤排灌级别的变化和上层土壤被转化为干草列的变化数量是两个影响土壤类型立地质量的影响因子。

Polymorphisms in FSHB gene and association with egg production traits The SSCP detection of PCR products showed that FSHβpro site was polymorphismic in two population. Six nucleotide variation at G-494A, T-470A, A-464G,-450A insertion, A-405G and A-361G,were identified in promotor region of TaiHu chicken;Three nucleotide variation at A-464G,-450A insertion, A-405G,were identified in promotor region of blue eggshell chicken,three genotype.

FSHβ基因多态性与产蛋性状关系 FSHβ基因5'调控区和外显子3经PCR-SSCP检测发现，两个鸡群在FSHβpro位点都有多态，太湖鸡发现6处碱基差异，分别是：G-494A，T-470A，A-464G，-450插入碱基A，A-405G，A-361G；而绿壳蛋鸡在该位点有3处突变，分别是A-464G，-450插入碱基A，A-405G，有3种基因型。

Based on the analysis of sediment grain size,suspended matter concentration in the water and other indicators,and on the examination of tidal variation data in the Yangtze Estuary,we found that the seasonal erosion and deposition cycle is closely linked to the morphology,suspended matter concentration in the water,hydrodynamics,tidal variation,wind direction,etc.

通过对沉积物粒度、水体含沙量等指标的测试，并借助潮差等资料，探究了影响潮滩季节性沉积的因素，发现潮滩季节性沉积与潮滩基础地貌、水体含沙量、水动力、潮流等有密切关系；但在不同部位不同季节，各因素对潮滩冲淤影响程度各不相同。

In this experiment,nad4 and cox1 genetic variation of cestodes were firstly studied.Genetic variation and DNA polymorphism of mitochondria were carried out from mitochondrial gene.So the effective genetic markers were found which studied molecular taxonomy and Phylogenetic relationship of cestodes.This study have filled in the blank space of research that was related to China\'s cestodes mitochondrial genome research.

本试验首次对绦虫nad4和cox1基因的遗传变异情况进行研究，从线粒体基因的角度，开展绦虫线粒体遗传变异和DNA多态性方面的研究，找到了研究绦虫分子分类学、种群遗传关系有效的遗传标记，填补了我国寄生绦虫线粒体全基因组相关研究的空白。

Biologists call this kind of gradual variation over a certain geographic range a "cline" and interpret clines as strong indications that the variation is adaptive, a response to environmental differences.

生物学家将这种在特定地理区域范围内的逐渐变化称为&渐变群&，并针对渐变群解释说，它强烈地表明这种变化是适应性的，是对环境差异所作出的反应。

Biologists call this kind of gradual variation over a certain geographic range a "cline" and interpret clines as strong indications that the variation is adaptive, a response to environmental differences.

生物学家将這种在特定地理区域范围内的逐渐变化称为&渐变群&，并针对渐变群解释说，它强烈地表明這种变化是适应性的，是对环境差异所作出的反应。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。